Experiments on sound radiation from propeller blades
Abstract
The effect of blade damping and air bubbles on cavitation noise radiation, and the damping effect of an antisinging edge were studied. Completely flat cunial and aluminum blades were used. One cunial blade had a viscoelastic sandwich layer. Cavitation was simulated by steam injection. The antisinging edge and viscoelastic layer have little effect. Aluminum reduces total sound power. When the distance of the bubble screen to the steam injection source is less than half a wavelength, radiated sound power is greatly reduced.
- Publication:
-
Unknown
- Pub Date:
- August 1981
- Bibcode:
- 1981esrp.book.....V
- Keywords:
-
- Noise Measurement;
- Propeller Blades;
- Sound Propagation;
- Underwater Acoustics;
- Bubbles;
- Cavitation Flow;
- Noise Spectra;
- Viscoelastic Damping;
- Acoustics